Robust 1/2"D impact driver complete with bit adaptor and bits, for loosening screws or nuts that have rusted, threaded or over tightened. The impact mechanism has a two-way clutch adjuster for clockwise and anti-clockwise use and the heavy-duty outer sleeve is knurled for grip. Turns and engages with one hammer blow to deliver a large amount of torque. A simple, effective solution for releasing stubborn fasteners.